The Cartier Tank Divan Reference 2599 is a luxury dress watch introduced by Cartier in 2002. It is celebrated for its avant-garde, horizontal layout that flips the traditional vertical rectangle orientation of the classic Tank collection. 

  The primary hallmark of the Tank Divan 2599 is its east-west orientation, meaning the watch case sits wider than it is tall. This configuration gives it an unexpected presence on the wrist despite its compact small/ladies classification. 

• The Dial: This specific model features an iridescent Mother of Pearl dial that displays shifting, soft color variations under illumination. It features elongated, stylized black or white Roman numeral hour markers radiating outward.

• The Hands: In typical Cartier fashion, the watch uses sword-shaped blued steel hands to complement the dial.

• The Crown: The winding crown is push-pull and set with a signature synthetic blue cabochon sapphire or a red/pink ruby stone, depending on the exact dial colorway.

• Case Profiles: Built out of premium surgical-grade stainless steel with high-gloss polished finishes. The case features a solid caseback and a scratch-resistant sapphire crystal to protect the dial.

• The Movement: Powered by a highly accurate Cartier Swiss quartz caliber. This choice keeps the case profile exceptionally slim (around 6.4mm thick) and limits the upkeep associated with mechanical movement watches.

• The Strap: The 32x25mm case requires a broad 24mm lug-width strap, which anchors the watch beautifully onto the wrist. It generally ships with a premium leather band secured by a stainless steel tang buckle.

• Water Resistance: Rated for 30 meters (3 ATM), making it resilient against minor accidental splashes but not suitable for swimming or showering.